#ifndef ERL_DRIVER_TYPES_ONLY

define DRIVER_INIT(DRIVER_NAME) __declspec(dllexport) ErlDrvEntry* driver_init(void)

/*
 * These are the functions available for driver writers.
 */
EXTERN int driver_select(ErlDrvPort port, ErlDrvEvent event, int mode, int on);
EXTERN int driver_event(ErlDrvPort port, ErlDrvEvent event, 
			ErlDrvEventData event_data);
EXTERN int driver_output(ErlDrvPort port, char *buf, int len);
EXTERN int driver_output2(ErlDrvPort port, char *hbuf, int hlen, 
			  char *buf, int len);
EXTERN int driver_output_binary(ErlDrvPort port, char *hbuf, int hlen,
				ErlDrvBinary* bin, int offset, int len);
EXTERN int driver_outputv(ErlDrvPort port, char* hbuf, int hlen, ErlIOVec *ev,
			  int skip);
EXTERN int driver_vec_to_buf(ErlIOVec *ev, char *buf, int len);
EXTERN int driver_set_timer(ErlDrvPort port, unsigned long time);
EXTERN int driver_cancel_timer(ErlDrvPort port);
EXTERN int driver_read_timer(ErlDrvPort port, unsigned long *time_left);

/*
 * Get plain-text error message from within a driver
 */
EXTERN char* erl_errno_id(int error);

/*
 * The following functions are used to initiate a close of a port
 * from a driver.
 */
EXTERN int driver_failure_eof(ErlDrvPort port);
EXTERN int driver_failure_atom(ErlDrvPort port, char *string);
EXTERN int driver_failure_posix(ErlDrvPort port, int error);
EXTERN int driver_failure(ErlDrvPort port, int error);
EXTERN int driver_exit (ErlDrvPort port, int err);


/*
 * Port Data Lock
 */

EXTERN ErlDrvPDL driver_pdl_create(ErlDrvPort);
EXTERN void driver_pdl_lock(ErlDrvPDL);
EXTERN void driver_pdl_unlock(ErlDrvPDL);
EXTERN long driver_pdl_get_refc(ErlDrvPDL);
EXTERN long driver_pdl_inc_refc(ErlDrvPDL);
EXTERN long driver_pdl_dec_refc(ErlDrvPDL);

/*
 * Process monitors
 */
EXTERN int 
driver_monitor_process(ErlDrvPort port, ErlDrvTermData process, 
		       ErlDrvMonitor *monitor);
EXTERN int 
driver_demonitor_process(ErlDrvPort port, const ErlDrvMonitor *monitor);
EXTERN ErlDrvTermData 
driver_get_monitored_process(ErlDrvPort port, const ErlDrvMonitor *monitor);
EXTERN int driver_compare_monitors(const ErlDrvMonitor *monitor1,
				   const ErlDrvMonitor *monitor2);

/*
 * Port attributes
 */
EXTERN void set_busy_port(ErlDrvPort port, int on);
EXTERN void set_port_control_flags(ErlDrvPort port, int flags);

EXTERN int  get_port_flags(ErlDrvPort port);


/* Binary interface */

/*
 * NOTE: DO NOT overwrite a binary with new data (if the data is delivered);
 * since the binary is a shared object it MUST be written once.
 */

EXTERN ErlDrvBinary* driver_alloc_binary(int size);
EXTERN ErlDrvBinary* driver_realloc_binary(ErlDrvBinary *bin, int size);
EXTERN void driver_free_binary(ErlDrvBinary *bin);

/* Referenc count on driver binaries */
EXTERN long driver_binary_get_refc(ErlDrvBinary *dbp);
EXTERN long driver_binary_inc_refc(ErlDrvBinary *dbp);
EXTERN long driver_binary_dec_refc(ErlDrvBinary *dbp);

/* Allocation interface */
EXTERN void *driver_alloc(size_t size);
EXTERN void *driver_realloc(void *ptr, size_t size);
EXTERN void driver_free(void *ptr);

/* Queue interface */
EXTERN int driver_enq(ErlDrvPort port, char* buf, int len);
EXTERN int driver_pushq(ErlDrvPort port, char* buf, int len);
EXTERN int driver_deq(ErlDrvPort port, int size);
EXTERN int driver_sizeq(ErlDrvPort port);
EXTERN int driver_enq_bin(ErlDrvPort port, ErlDrvBinary *bin, int offset, 
			  int len);
EXTERN int driver_pushq_bin(ErlDrvPort port, ErlDrvBinary *bin, int offset,
			    int len);

EXTERN int driver_peekqv(ErlDrvPort port, ErlIOVec *ev);
EXTERN SysIOVec* driver_peekq(ErlDrvPort port, int *vlen);
EXTERN int driver_enqv(ErlDrvPort port, ErlIOVec *ev, int skip);
EXTERN int driver_pushqv(ErlDrvPort port, ErlIOVec *ev, int skip);

/*
 * Add and remove driver entries.
 */
EXTERN void add_driver_entry(ErlDrvEntry *de);
EXTERN int remove_driver_entry(ErlDrvEntry *de);

/*
 * System info
 */
EXTERN void driver_system_info(ErlDrvSysInfo *sip, size_t si_size);

/*
 * erl driver thread functions.
 */

EXTERN ErlDrvMutex *erl_drv_mutex_create(char *name);
EXTERN void erl_drv_mutex_destroy(ErlDrvMutex *mtx);
EXTERN int erl_drv_mutex_trylock(ErlDrvMutex *mtx);
EXTERN void erl_drv_mutex_lock(ErlDrvMutex *mtx);
EXTERN void erl_drv_mutex_unlock(ErlDrvMutex *mtx);
EXTERN ErlDrvCond *erl_drv_cond_create(char *name);
EXTERN void erl_drv_cond_destroy(ErlDrvCond *cnd);
EXTERN void erl_drv_cond_signal(ErlDrvCond *cnd);
EXTERN void erl_drv_cond_broadcast(ErlDrvCond *cnd);
EXTERN void erl_drv_cond_wait(ErlDrvCond *cnd, ErlDrvMutex *mtx);
EXTERN ErlDrvRWLock *erl_drv_rwlock_create(char *name);
EXTERN void erl_drv_rwlock_destroy(ErlDrvRWLock *rwlck);
EXTERN int erl_drv_rwlock_tryrlock(ErlDrvRWLock *rwlck);
EXTERN void erl_drv_rwlock_rlock(ErlDrvRWLock *rwlck);
EXTERN void erl_drv_rwlock_runlock(ErlDrvRWLock *rwlck);
EXTERN int erl_drv_rwlock_tryrwlock(ErlDrvRWLock *rwlck);
EXTERN void erl_drv_rwlock_rwlock(ErlDrvRWLock *rwlck);
EXTERN void erl_drv_rwlock_rwunlock(ErlDrvRWLock *rwlck);
EXTERN int erl_drv_tsd_key_create(char *name, ErlDrvTSDKey *key);
EXTERN void erl_drv_tsd_key_destroy(ErlDrvTSDKey key);
EXTERN void erl_drv_tsd_set(ErlDrvTSDKey key, void *data);
EXTERN void *erl_drv_tsd_get(ErlDrvTSDKey key);
EXTERN ErlDrvThreadOpts *erl_drv_thread_opts_create(char *name);
EXTERN void erl_drv_thread_opts_destroy(ErlDrvThreadOpts *opts);
EXTERN int erl_drv_thread_create(char *name,
				 ErlDrvTid *tid,
				 void * (*func)(void *),
				 void *args,
				 ErlDrvThreadOpts *opts);
EXTERN ErlDrvTid erl_drv_thread_self(void);
EXTERN int erl_drv_equal_tids(ErlDrvTid tid1, ErlDrvTid tid2);
EXTERN void erl_drv_thread_exit(void *resp);
EXTERN int erl_drv_thread_join(ErlDrvTid, void **respp);

/*
 * Misc.
 */
EXTERN int null_func(void);

#endif /* !ERL_DRIVER_TYPES_ONLY */


// ...


#ifndef ERL_DRIVER_TYPES_ONLY

/* make terms for driver_output_term and driver_send_term */
EXTERN ErlDrvTermData driver_mk_atom(char*);
EXTERN ErlDrvTermData driver_mk_port(ErlDrvPort);
EXTERN ErlDrvTermData driver_connected(ErlDrvPort);
EXTERN ErlDrvTermData driver_caller(ErlDrvPort);
extern const ErlDrvTermData driver_term_nil;
EXTERN ErlDrvTermData driver_mk_term_nil(void);
EXTERN ErlDrvPort driver_create_port(ErlDrvPort creator_port, 
				     ErlDrvTermData connected, /* pid */
				     char* name, /* driver name */
				     ErlDrvData drv_data);
					 

/* output term data to the port owner */
EXTERN int driver_output_term(ErlDrvPort ix, ErlDrvTermData* data, int len);
/* output term data to a specific process */
EXTERN int driver_send_term(ErlDrvPort ix, ErlDrvTermData to,
			    ErlDrvTermData* data, int len);

/* Async IO functions */
EXTERN long driver_async(ErlDrvPort ix,
			 unsigned int* key,
			 void (*async_invoke)(void*), 
			 void* async_data,
			 void (*async_free)(void*));


EXTERN int driver_async_cancel(unsigned int key);

/* Locks the driver in the machine "forever", there is
   no unlock function. Note that this is almost never useful, as an open
   port towards the driver locks it until the port is closed, why unexpected
   unloading "never" happens. */
EXTERN int driver_lock_driver(ErlDrvPort ix);

/* Get the current 'now' timestamp (analogue to erlang:now()) */
EXTERN int driver_get_now(ErlDrvNowData *now);


/* These were removed from the ANSI version, now they're back. */

EXTERN void *driver_dl_open(char *);
EXTERN void *driver_dl_sym(void *, char *);
EXTERN int driver_dl_close(void *);
EXTERN char *driver_dl_error(void);

/* environment */
EXTERN int erl_drv_putenv(char *key, char *value);
EXTERN int erl_drv_getenv(char *key, char *value, size_t *value_size);

#endif /* !ERL_DRIVER_TYPES_ONLY */